Albeet s



(Model.)

A. S. EBER MAN.

INJBGTOR.

Patented July 26, 1887.

N. Pneus. mwmmgnpher, wnningm nc.

UNITED .t STATES PATENT EEICE.Y

' ALBERT S. EBERMAN, OF BALTIMORE, MARYLAND.

iNJEeToR.

SPECIFICATION forming part of Letters Patent No. 367,138. dated July 26,1887.

Application filed April 14, 1887. Serial No. 234,831. (Model.)

T0 @ZZ whom, it may concern,.-

, Be it known that I, ALBERT S. EBERMAN, of Baltimore, in the State ofMaryland, have invented certain new and useful Improvements inInjectors; andIdo hereby declare the following to be a full, clear, andexact description ofthe invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

My invention relates to an improvement inY injectors for supplyingfeed-water to steamboilers or raising and forcing liquids againstpressure; A

It is one object of my invention to produce an injector which shall beautomatic in its action of starting and restarting, so that when theinjector is put in proper communication with steam and water supplies itwill automatically start itself and force water into the boiler whichsupplies itwith steam or against a pressure equal to saidsteanrpressure; and, further, to combine with this automatic action theability to so operate over the entire range of-steam-pressure, and underany of the various circumstances as to source of watersupply to whichinjectors are usually subjected, without requiring any adjustment of anyof its parts or the throttling of either the steam or water supplies7 ashas been usually required by injectors made to be automatic in theiraction.

A further object of my invention is to provide an injector which, whennotin operation, will automatically so adjust itself that air is freelyadmitted to it and its connecting-pipes, and allowing the water tofreely drain there- '.from, thus leaving the instrument in the bestcondition for restarting when stopped temporarily, also, obviating alldanger of damage from freezing when not in operation during cold weatherand with pipes in exposed places.

A further object is to simplify the construetion and provide an injectorthat will be inexpensive to keep in repair, and to secure a device ofincreased effectiveness, reliability, and convenience. V

With these ends in View my invention consists in certain features ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

In the accompanying drawings, Figure l represents a verticallongitudinal section of an injector embodying my presentinvention. Fig.2 is a transverse section on line fu o, Fig. l.

boiler; C, the water-connection, leading to a well or other source ofwater-suppl y.

Inwardly from thesteam-branch B of the ease A a steamchamber, E, isformed, which is made to extend or branch toward the rear end, and alsotoward its center, so that steam admitted to said chamber Esimultaneously passes to both the lifting and forcing parts of theinjector. In the rear end of the case A is an opening, F, for thepurpose of facilitating the insertion of the internal parts, whichopening is closed by a screw-threaded cap, H.

Through the rear partition, J, between the steam-chamber E and thewater-chamber K, the steam-jet 1 is placed, forward 0f which, and on thesame axial line through the forward partition, L, between thesteam-chamber E and water-chamber K, the combining or water tube 2 ofthe lifting or first injector is placed. The combining-tube 2 iselongated on its forward end and made to extend across the forwardbranch of the steamchamber E and thro ugh the steamtube 3 of the forcingor second injector, which is inserted in the partition P of the case Aon the same axial line with the steam-jet l and the combining or watertube 2, said steam-tube 3 being made sufficiently large to permit theelongated end e of the combining or water tube 2 to pass through it, andat the same time leave an annular space around it, which gives to thesteam-jet 4 of the forcing-injector an annular form', surrounding thetermination of the combining or `water tube 2.

Forward of and in the same axial lin'e with the jets and tubes justdescribed, in the main chamber K of the case A, the combining-tube anddischarge-nozzle L is located, this com- Dining-tube L being movableendwise and having attached to it near its end that is adjacent to theannular steam-jet 4. a pistonvalve, N, which may be fastened to saidtube by screw-threads aud loclenut, or in any other suitable manner. Thepiston-valveNis made to conform to the size of the main chamber K',

rl lo IOO at that part that said valve occupies when the combiningtubeL' is in operative position with regard to the annular jet-spacesurrounding the extremity e of the combining-tube 2 that is a part ofthelifting-injector.

Near the discharge end M the body of the combining-tube L is enlarged,and upon the shoulder thus produced au overflow-valve, M', is formed,which is adapted to tit the seat Q, provided for its reception, thisseat being formed in the detached portion A' of the case A. The contactof the valve M' and seat Q is effected when the combining-tube L' is ina position to force water, as shown iu Fig. 1 of t-he drawings.

The part of the main chamber K occupied by the piston-valve N when thecombiningtube L' is not in operation is enlarged sufficiently to permitthe formation of a passage around said piston-valve N, this enlargementof the chamber K' having in it the guides or projecting portions l.: k,Ave., that [it the pe- -ripheral surface of the pistoirvalve N and serveto keep in axial line the combiningtube L'. 1

The enlarged portion M of the combiningtube L', between the valve Q andthe free extremity of this portion M, has longitudinal depressions g g,&c., made at spaced intervals on its cylindrical surface to formdischargepassages from the discharge end h ofthe combining-tube L'around the valve Q when this valve is off of its seat.

rlhe piston-valve N is of larger area than the discharge end lz ofthecombiningtube L'.

Communicating with the top of the central part ofthe main chamber K',and su rrounding the same, the waste or overtlow passage ll.' is formed.rlhis is shown in Fig. 3, the case A being enlarged at this point topermit the formation of the passage j ust described.

On the top ef the case A, at the point of communication between the mainchamber K' and the Yaste or overflow passage H', the aperture O isformed to permit the insertion ofthe valve G, this opening being closedby a screw-threaded cap, G'.

The opening S, between the main chamber K' and the waste or overflowpassage H', is closed by an inwardly-seating valve, G, the purpose ofwhich is to prevent the inflow of air to the injector when in operation.

The body of the valve G is made to extend through said opening into themain chamber K' s0 'far that when the overflow-valve Q and piston-valveN are unseated the piston-valve cornes in contact with said valve G andraises it from its seat at once, admitting air to enter the injector andlill it and its connecting-pipes.

It is necessary that the overflow-valve Q on the combining-tube L beplaced in such a position that the receiving end ofthe combiningtube Lshall be near to or surround the discharge end of the steanrtube 3 andthe annular steam-jet 4; when in operation.

Upon the inuei` end of the attached portion A of the case A theprojections A2 are ating-tube 2.

tached or integrally formed. -These are of a proper length to act asstops against which the piston-valve N rests when the overtlow-valve Qand piston-valve N are unseated or open. I do not limit myself to thisexact construetion of the stop A2, as it is evident that a slottedannular collar may be substituted, or other similar device used.

rlhe operation of the injector is as follows: It being properlyconnected to steam and water supplies, and to the water-space of aboiler or other destination of the water, the throttle with which thesteam-pipe is provided is opened and steam admitted to the chamber E,from which it simultaneously enters the steam jet l and the annularsteam-passage 4. rlhe combining-tube L', it' not in such a position,will at once be forced back by the pressure of steam upon the surface ofthe pistonval ve N, thus opening the piston-valve N, the overflow-valveQ, as well as the valve G, and permitting a free passage of steam to andthrough thc waste or overflow passage H' to the atmosphere. rlhe steampasses through the steam-jet l, across the water-chamber.' K, andthrough the combining-tube 2, and thence by the pistonyalve N,overflow-valve Q, and valve G to the atmosphere. This operation willexhaust the air from the watersupply pipe which is connected to thebranch C, water will rise through said pipe, fill the water-chamber K,and i'low through the combin- When water issues from the discharge endof the combiningtube 2, it is actuated by the annular jet of steamissuing around the end c of the combining-tube 2 and forced in a directline into the receiving end of the eombining-tube L. The water, servingto condense the issuing steam, relieves the pressure on the piston-valveN. The water, being forced through the combiningtube L' against theboiler cheek-valve, creates a sufcient pressure against the end M of thecombining-tube L' to force it toward the combining-tube 2 until theoverflow Q abuts its seat, which movement at the same time places thepistonvalve N in its closed position and permits the valve G to engageits seat and close the overflow-passage H', thereby preventing theinflow of air into the injector..

The water being prevented from passing through the overt-low by themeans just describcd,incrcasesits pressure againstthe cheekvalve untilthis valve is raised and water passes intothe boiler.Thisoperationwilleontinueas long as water is supplied and the steamremains turned on. If, however, the water should fail for anyreason-such as the surging of the water in the tank or the jar of alocomotive or traction engine--or if from any cause-such as the foamingof the water in a' boiler or other source of steam supply from whichsteam is furnished to the injector-this regular steanrsupply isintercepted, the combining-tube L' at once moves the valve Q from itsseat, at the same time opening the piston-valve N, and unseat's thevalve G7 which IIO the working parts will automatically assume the sameposition as they occupy when the instrument is accidentally interruptedin its operation. Thus by the free iniiux of air and consequentdischarge of water or condensed I5 steam the injector is left in propercondition to avoid injury that would result to it if left filled withwater and exposed to a freezing temperature.

The avoidance of an accumulation of hot 2C waterinthe body of theinjector and its pipes,

when the operation of the same is temporarily suspended, is of greatadvantage,in that it insures the instantaneous lifting of Water andforcing of the same without the vexatious de- 2 5 lay such as hot-Wateraccumulation frequently entails in the operation of an ordinaryinjector.

It is evident that slight changes might be made in the details ofconstruction Without 3o departure from the spirit of my invention;

hence I do not desire to limit myself to the exactconstruction of partsas herein shown;

but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, isy p 1. In an injector, thecombinatiom'u-'ith a combining-tube adapted to slide endwise, of a valvelocated to one side of the combining- 4 0 tube and adapted to be openedby the sliding movement of this tube, substantially as set forth. c.

2. In an injector, the combination, with a lftinginjector and aforcing-injector, the combilling-tube of the forcing-injector beingmovable endwise, of a valve located to one side of the combining-tubeand adapted to be unseated by the endwise movement ofthe saidtube,substantially as set forth.

3. In an injector, the combination, with a case, a main interiorchamber, and a valve that will open a passage to the atmosphere,of aninjector-tube adapted to unseat this valve when the injector is at restand permit the valve to close-when the injector is in use, substantiallyas set forth.

4. In an injector, the combination, with a5 steani-jetlifting deviceadapted to raise water and supply it continuously to a steam-jet-forc-6o ing device, of a steam-jet Water-forcing device the actuatingsteam-jet of which is annular and the Water-receiving tube of which isendwise movable, these operating devices being placed in an axial lineto cause the water de livered by the lifting device to directly enter 5.In an injector, the combination, with a steam-jet-lifting device, of asteam-jet-forcing device placed in the same axial line, thecombining-tnbe of the lifting device extending through the steam-tube ofthe forcing device, forming an annular steam-passage for theforcing-jet, the combining-tube of the lifting-injector dischargingdirectly into the combiningtube of the forcing device, this latternamedcombining-tube being endwise movable, with a passage around itsdischarge end vand a valve to close an opening made to this passage,substantially as set forth.

6. In an injector, the combination, with a steam-jet water-liftingdevice and a steam-jet water-forcing device, both devices being locatedin one case in an axial line with each other, the water receiving orcombining tube of the forcing device having a passage Way formed uponits peripheral surface, of a valve adapted to seat against a projectionformed on the interior surface ofthe case to close this passage-way,substantially as set forth.

7. The combination of a steam-jet-lifting device and a steam-jet-forcingdevice having an adjustable ontwardlydeiivering overflowspace common toboth at the receiving end of the forcer combiniugtube, substantially asset forth.

8. The combination of a steam -jet-lifting device and asteam-jet-forcing device having an automatically-adjustableoutwardly-deliv-- ering overdow-space common to both at the receivingend' of the forcer combining-tube, substantially as set forth.

9. In an injector, the combination, with a steam-jet-lifting device, ofa steam-jet-forcing device placed in the same axial line, thedischarge-nozzle of the forcing device being endwise movable, and havinga passage around its -discharge end and carrying a valve to close saidpassage, substantially as and for the purpose set forth.

10. In an injector, the combination, with a steam-jet-lifting device, ofa steam-jet-forcing device placed in the same axial line, theconibining-tube of the forcing device being endwise movable, and havinga passage around its receiving end and carrying a valve to close saidlpassage, substantially as set forth.

1l. In an injector, the combination, with a steam-jet-lifting device, ofa steamjet-forcing devi'ce placed in the same axial line, thecombining-tube and discharge-nozzle of the forcing device being endwisemovable,and having passage-Ways from both the receiving end of thecombining-tube and discharge end of discharge-nozzle and carrying valvestoclose said passage-ways, substantially as set forth.

In `testimony whereof I have signed this specification in the presenceof two subscribing witnesses.

ALBERT SxEBE-RMAN. Vitnesses:

W. S. Rains, E. G. EBERMAN.

IIC

